<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Js-getIn</title>
    <!-- inner script -->
    <!-- <script>
        alert("hello JS");
    </script> -->
    <!-- outer script -->
    <!-- <script src="./JsTest/demo01.js"></script> -->
</head>
<body>
    <script>
        /* window.alert("warning JS"); */
        var a = 10;
        alert(a);

        //new let:local var
        //

        // document.write("document_write");
        // console.log("console_text");
    </script>
    
</body>
</html>